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by <br /> ' i`i'r�10441�w� <br /> 431 <br /> Scott T Hooton BP 011 Company <br /> Portfolio Manager Midwest gnvwronmental Services <br /> 295 SW 41't Street <br /> Bldg 13 Suite N <br /> Renton WA 98055 <br /> Switchboard 4251251-0667 <br /> Central Fax 425/251-0736 <br /> February 26, 2001 <br /> Mr Harlin Knoll <br /> San Joaquin County Public Health Services <br /> PO Box 2009 <br /> Stockton, CA 95201 <br /> RE Former BP Oil Site No 11 194 <br /> 2375 Tracy Bouevard <br /> Tracy, CA <br /> Direct 4251751-0689 Dear Mr Knoll <br /> Cell 206/919 5029 <br /> hootonst®bp corn This letter transmits the 21 February 2001 Groundwater Monitoring and Sampling Report prepared <br /> www by corn on behalf of BP by Blaine Tech Services The report includes chemical data associated with <br /> groundwater samples obtained on 17 January 2001 <br /> Variable concentrations of MTBE were detected in samples obtained on 17 January 2001, with the <br /> • highest concentration reported in samples obtained from well MW-2 Water elevation, MTBE and <br /> TPHg concentration data for well MW-2 is shown below <br /> MW-2 TPHg, MTBE&Water Elevation <br /> 120000 25 <br /> 100000 20 <br /> SOOOD 115 -® Tag <br /> rn <br /> 60000 y WffBE <br /> 10 Water Elevation <br /> 40000 <br /> 5 8/1/94 Tosco <br /> 20000 acquired legal <br /> interestin <br /> 0 0 underground <br /> I- CO o o cu CO v v (0 (D Oc o storage tanks <br /> co Co cn rn rnCIDw M M 0) 0) a) a <br /> a) 0) M a) Cr) am rn rn M rn rn rn o <br /> r N piping and <br /> Z-1 t- co _, N N 'o N o v LZ F4 improvements <br /> rNr <br /> r CO M <br /> The presence of 0 03 feet of liquid petroleum hydrocarbon in well Xft-3 was an issue of concern <br /> raised in a 10 January 1997 letter from San Joaquin County Public Health Services Note that liquid <br /> petroleum hydrocarbon was not encountered in well MW-3 when sampled on 17 January 2001 The <br /> aromatic hydrocarbon and TPH-G concentrations detected in well MW-3 indicate that the liquid <br /> petroleum hydrocarbons have been abated MW-3 is located east-northeast of the underground <br /> storage tanks <br />